lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list] 
Date:   Mon, 24 Oct 2022 12:23:03 +0200
From:   AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>
To:     sboyd@...nel.org
Cc:     mturquette@...libre.com, matthias.bgg@...il.com,
        angelogioacchino.delregno@...labora.com, wenst@...omium.org,
        miles.chen@...iatek.com, nfraprado@...labora.com,
        rex-bc.chen@...iatek.com, chun-jie.chen@...iatek.com,
        jose.exposito89@...il.com, yangyingliang@...wei.com,
        msp@...libre.com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH 06/10] clk: mediatek: mt6795-topckgen: Drop flags for main/sys/univpll fixed factors

The main/sys/univpll clocks are used as clock sources for multiple
peripherals of different kind, some of which are critical (like AXIs);
a rate change on any of these two will produce a rate change on many
devices and that's likely to produce system instability if not done
correctly: this is the reason why we have (a lot of) "fixed factor"
main/sys/univpll divider clocks, used by MUX clocks to provide
different rates based on PLL output dividers.

Following what was done on clk-mt8186-topckgen and also preventing the
same GPU DVFS issue, drop CLK_SET_RATE_PARENT from the aforementioned
clocks.

Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---
 drivers/clk/mediatek/clk-mt6795-topckgen.c | 76 +++++++++++-----------
 1 file changed, 38 insertions(+), 38 deletions(-)

diff --git a/drivers/clk/mediatek/clk-mt6795-topckgen.c b/drivers/clk/mediatek/clk-mt6795-topckgen.c
index 2948dd1aee8f..8b8307635a35 100644
--- a/drivers/clk/mediatek/clk-mt6795-topckgen.c
+++ b/drivers/clk/mediatek/clk-mt6795-topckgen.c
@@ -359,19 +359,19 @@ static const struct mtk_fixed_factor top_divs[] = {
 	FACTOR(CLK_TOP_ARMCA53PLL_754M, "armca53pll_754m", "clk26m", 1, 2),
 	FACTOR(CLK_TOP_ARMCA53PLL_502M, "armca53pll_502m", "clk26m", 1, 3),
 
-	FACTOR(CLK_TOP_MAIN_H546M, "main_h546m", "mainpll", 1, 2),
-	FACTOR(CLK_TOP_MAIN_H364M, "main_h364m", "mainpll", 1, 3),
-	FACTOR(CLK_TOP_MAIN_H218P4M, "main_h218p4m", "mainpll", 1, 5),
-	FACTOR(CLK_TOP_MAIN_H156M, "main_h156m", "mainpll", 1, 7),
+	FACTOR_FLAGS(CLK_TOP_MAIN_H546M, "main_h546m", "mainpll", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_MAIN_H364M, "main_h364m", "mainpll", 1, 3, 0),
+	FACTOR_FLAGS(CLK_TOP_MAIN_H218P4M, "main_h218p4m", "mainpll", 1, 5, 0),
+	FACTOR_FLAGS(CLK_TOP_MAIN_H156M, "main_h156m", "mainpll", 1, 7, 0),
 
 	FACTOR(CLK_TOP_TVDPLL_445P5M, "tvdpll_445p5m", "tvdpll", 1, 4),
 	FACTOR(CLK_TOP_TVDPLL_594M, "tvdpll_594m", "tvdpll", 1, 3),
 
-	FACTOR(CLK_TOP_UNIV_624M, "univ_624m", "univpll", 1, 2),
-	FACTOR(CLK_TOP_UNIV_416M, "univ_416m", "univpll", 1, 3),
-	FACTOR(CLK_TOP_UNIV_249P6M, "univ_249p6m", "univpll", 1, 5),
-	FACTOR(CLK_TOP_UNIV_178P3M, "univ_178p3m", "univpll", 1, 7),
-	FACTOR(CLK_TOP_UNIV_48M, "univ_48m", "univpll", 1, 26),
+	FACTOR_FLAGS(CLK_TOP_UNIV_624M, "univ_624m", "univpll", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIV_416M, "univ_416m", "univpll", 1, 3, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIV_249P6M, "univ_249p6m", "univpll", 1, 5, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIV_178P3M, "univ_178p3m", "univpll", 1, 7, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIV_48M, "univ_48m", "univpll", 1, 26, 0),
 
 	FACTOR(CLK_TOP_CLKRTC_EXT, "clkrtc_ext", "clk32k", 1, 1),
 	FACTOR(CLK_TOP_CLKRTC_INT, "clkrtc_int", "clk26m", 1, 793),
@@ -402,20 +402,20 @@ static const struct mtk_fixed_factor top_divs[] = {
 	FACTOR(CLK_TOP_MSDCPLL2_D2, "msdcpll2_d2", "msdcpll2", 1, 2),
 	FACTOR(CLK_TOP_MSDCPLL2_D4, "msdcpll2_d4", "msdcpll2", 1, 4),
 
-	FACTOR(CLK_TOP_SYSPLL_D2, "syspll_d2", "main_h546m", 1, 1),
-	FACTOR(CLK_TOP_SYSPLL1_D2, "syspll1_d2", "main_h546m", 1, 2),
-	FACTOR(CLK_TOP_SYSPLL1_D4, "syspll1_d4", "main_h546m", 1, 4),
-	FACTOR(CLK_TOP_SYSPLL1_D8, "syspll1_d8", "main_h546m", 1, 8),
-	FACTOR(CLK_TOP_SYSPLL1_D16, "syspll1_d16", "main_h546m", 1, 16),
-	FACTOR(CLK_TOP_SYSPLL_D3, "syspll_d3", "main_h364m", 1, 1),
-	FACTOR(CLK_TOP_SYSPLL2_D2, "syspll2_d2", "main_h364m", 1, 2),
-	FACTOR(CLK_TOP_SYSPLL2_D4, "syspll2_d4", "main_h364m", 1, 4),
-	FACTOR(CLK_TOP_SYSPLL_D5, "syspll_d5", "main_h218p4m", 1, 1),
-	FACTOR(CLK_TOP_SYSPLL3_D2, "syspll3_d2", "main_h218p4m", 1, 2),
-	FACTOR(CLK_TOP_SYSPLL3_D4, "syspll3_d4", "main_h218p4m", 1, 4),
-	FACTOR(CLK_TOP_SYSPLL_D7, "syspll_d7", "main_h156m", 1, 1),
-	FACTOR(CLK_TOP_SYSPLL4_D2, "syspll4_d2", "main_h156m", 1, 2),
-	FACTOR(CLK_TOP_SYSPLL4_D4, "syspll4_d4", "main_h156m", 1, 4),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL_D2, "syspll_d2", "main_h546m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL1_D2, "syspll1_d2", "main_h546m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL1_D4, "syspll1_d4", "main_h546m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL1_D8, "syspll1_d8", "main_h546m", 1, 8, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL1_D16, "syspll1_d16", "main_h546m", 1, 16, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL_D3, "syspll_d3", "main_h364m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL2_D2, "syspll2_d2", "main_h364m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL2_D4, "syspll2_d4", "main_h364m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL_D5, "syspll_d5", "main_h218p4m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL3_D2, "syspll3_d2", "main_h218p4m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL3_D4, "syspll3_d4", "main_h218p4m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL_D7, "syspll_d7", "main_h156m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL4_D2, "syspll4_d2", "main_h156m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_SYSPLL4_D4, "syspll4_d4", "main_h156m", 1, 4, 0),
 
 	FACTOR(CLK_TOP_TVDPLL, "tvdpll_ck", "tvdpll_594m", 1, 1),
 	FACTOR(CLK_TOP_TVDPLL_D2, "tvdpll_d2", "tvdpll_594m", 1, 2),
@@ -423,21 +423,21 @@ static const struct mtk_fixed_factor top_divs[] = {
 	FACTOR(CLK_TOP_TVDPLL_D8, "tvdpll_d8", "tvdpll_594m", 1, 8),
 	FACTOR(CLK_TOP_TVDPLL_D16, "tvdpll_d16", "tvdpll_594m", 1, 16),
 
-	FACTOR(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univ_624m", 1, 1),
-	FACTOR(CLK_TOP_UNIVPLL1_D2, "univpll1_d2", "univ_624m", 1, 2),
-	FACTOR(CLK_TOP_UNIVPLL1_D4, "univpll1_d4", "univ_624m", 1, 4),
-	FACTOR(CLK_TOP_UNIVPLL1_D8, "univpll1_d8", "univ_624m", 1, 8),
-	FACTOR(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univ_416m", 1, 1),
-	FACTOR(CLK_TOP_UNIVPLL2_D2, "univpll2_d2", "univ_416m", 1, 2),
-	FACTOR(CLK_TOP_UNIVPLL2_D4, "univpll2_d4", "univ_416m", 1, 4),
-	FACTOR(CLK_TOP_UNIVPLL2_D8, "univpll2_d8", "univ_416m", 1, 8),
-	FACTOR(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univ_249p6m", 1, 1),
-	FACTOR(CLK_TOP_UNIVPLL3_D2, "univpll3_d2", "univ_249p6m", 1, 2),
-	FACTOR(CLK_TOP_UNIVPLL3_D4, "univpll3_d4", "univ_249p6m", 1, 4),
-	FACTOR(CLK_TOP_UNIVPLL3_D8, "univpll3_d8", "univ_249p6m", 1, 8),
-	FACTOR(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univ_178p3m", 1, 1),
-	FACTOR(CLK_TOP_UNIVPLL_D26, "univpll_d26", "univ_48m", 1, 1),
-	FACTOR(CLK_TOP_UNIVPLL_D52, "univpll_d52", "univ_48m", 1, 2),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D2, "univpll_d2", "univ_624m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL1_D2, "univpll1_d2", "univ_624m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL1_D4, "univpll1_d4", "univ_624m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL1_D8, "univpll1_d8", "univ_624m", 1, 8, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D3, "univpll_d3", "univ_416m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL2_D2, "univpll2_d2", "univ_416m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL2_D4, "univpll2_d4", "univ_416m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL2_D8, "univpll2_d8", "univ_416m", 1, 8, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D5, "univpll_d5", "univ_249p6m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL3_D2, "univpll3_d2", "univ_249p6m", 1, 2, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL3_D4, "univpll3_d4", "univ_249p6m", 1, 4, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL3_D8, "univpll3_d8", "univ_249p6m", 1, 8, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D7, "univpll_d7", "univ_178p3m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D26, "univpll_d26", "univ_48m", 1, 1, 0),
+	FACTOR_FLAGS(CLK_TOP_UNIVPLL_D52, "univpll_d52", "univ_48m", 1, 2, 0),
 
 	FACTOR(CLK_TOP_VCODECPLL, "vcodecpll_ck", "vcodecpll", 1, 3),
 	FACTOR(CLK_TOP_VCODECPLL_370P5, "vcodecpll_370p5", "vcodecpll", 1, 4),
-- 
2.37.2

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ